On Tue, 11 Apr 2006 12:54:46 -0300, Bruno Robichaud said:
> Hi, I was just wondering if other has the same issues with IIS SMTP, one day
> it work, some other day not anymore.

Redmond Quality Software. :)

I don't know *anybody* who's using IIS SMTP for anything other than toy
workloads. If you're stuck with Windows, your best choice is probably LSoft's
LSMTP or offload the heavy lifting to another box running some Linux or *BSD
with a good MTA such as Sendmail or Postfix or similar.

Also, I suspect that many of us here have a totally different definition of "a
lot of mailing" than you do.  A million a day is "slow", a million an hour is
getting up there, and I know people who are doing stuff at the 10M/hour level
using Sendmail.

(Side note - throwing a million e-mails an hour is fairly easy once you understand
your queue management.  *Catching* a million e-mails an hour is a lot harder, mostly
because getting them into user mailboxes tends to be I/O intensive...)